As North American energy codes continue to evolve, demands on building envelope thermal performance have increased, and wall assemblies with continuous exterior insulation are now frequently needed to meet stringent new requirements. High-density stone wool products are an excellent option for continuous insulation. Semi-rigid and rigid insulation boards are easy to secure with long screws or other cladding attachment systems, and when used in conjunction with stud cavity insulation, can greatly improve overall wall thermal performance.

Stone wool has excellent long-term thermal performance. While the R-value of other insulation materials may change over time due to the use of blowing agents, and poor dimensional stability can cause some insulation types to shrink or expand leading to thermal bridging, ROCKWOOL stone wool maintains consistent thermal performance.

Because it is manufactured out of inert stone and slag, ROCKWOOL stone wool will not excessively shrink, expand, or sag over time, even after exposure to large temperature swings and varying levels of moisture exposure.